Cocoon-unwinding device



March 16 1926.

v. FIORUZZ I COCDON UNWINDING DEVICE Filed May 4, 1925 2 Sheets-Sheet 1 March 16 1926. 1,577,118

' v. FIORUZZI COCOON UNWINDING DEVICE Filed May 4, 1923 2 Sheets-Sheet 2 Patented Mar. 16, i 1926.

UNITED STATES PATENT orrice.

vrrromolr onnzzi, or PIACENZA, ITALY.

COCOON-UNWINDING 'IDEVICE.

Application filed May 4,

Too whom it may concern;

Be it known that I, VITToRIo Fionnzzi, subject of the Kingof Italy, and residing at Piacenza, Italy, have invented a new and useful Cocoon-Unwinding Device, of which the following is a specification.

The object of this invention is to provide improved apparatus by means of which nearly exhausted cocoons may be culled 10 from the other cocoons in order to improve the quality of thesilk to be produced.

With the above and other objects in view the invention consists in the construction and arrangement of devices hereinafter described and claimed.

In the accompanying drawings- Figure l is a sectional view of an apparatus constructed and arranged in accordance With my invention.

Figure 2 is a plan of the same. Figure 3 is a sectional View of a modified form of the apparatus.

Fi ure i is a plan of the same. Figure 5 is a sectional view of another modified form of my improved apparatus.

Figure 6 is a plan of the same.

In accordance with my invention I provide a basin or container A in which a current of water is maintained in one direction.

Bu Arranged transversely and somewhat obliquely in the basin is a drum B one end of which is near one side D of the basin While the other end is spaced from the opposite side as at E to form a channel the width of which is at least equal to the greatest dimension of a fresh cocoon. The drum ro tates in the direction of the current and obstructs the width of the basin excepting at the point E. I

,Fresh cocoons float. Cocoons which are nearly exhausted sink. The threads from the cocoons are wound by the usual means and in the usual manner as at X, Fig. 1, after being drawn through a guide eye G.

The cocoons from which the threads are wound are held close to the drum by the action of the current of water and by the tension of the cocoon threads.

While the cocoons are'fresh they present but a small contacting surface with the drum and hence do not pass thereoveri WVhen a cocoon is nearly exhausted of its thread, it is crushed owing to the draft exerted by the deve op ng threa and y the cu rent of 1923. 1 Serial No. 636,684;

water which. presses the cocoon against the drum so that thecocoon leans on the drum almost entirely, presenting an increased surface to contact with the drum and hence such nearly exhausted cocoon is caused to pass over the drum where it is seized and carried out by any suitable means.

In the event that a cocoon which is not. exhausted should, by reason of the tearing of. its thread, become detached, such detached' cocoon will float from the drum through the channel E and be carried off by the current as will be understood;

In the form of the invention shown in Figures 3 and 4 the walls of the basin are indicated at G and the guide eye of the threads at L. In this form of the invention the drum B is dispensed with and an inclined bevel plate H is employed in lieu thereof and is provided near its upper edge with notches. The bevel wall is spaced unequally from the opposite sides of the basin to form a channel F for the passage of exhausted cocoons and a channel I for the passage of such fresh cocoons as become detached due to the breaking of their threads.

The operation of this form of the invention is as follows:

Due to the draft of the unwinding thread the cocoons are maintained against the wall H, and as the cocoon becomes nearly exhausted and loses in weight it is eventually drawn by the unwinding thread, assisted by the current over the wall H into the channel F where it is seized and expelled.

In the embodiment of the invention shown in Figures 5 and 6 I employ a plate section which isimmersed in the water. On this plate'is a partition wall 0 which has openings of somewhat less width than that of a fresh cocoon. The said plate is so arranged as to provide a channel Q in rear of its wall 0 through which the nearly ex hausted cocoons can pass anda channel B through which fresh cocoons which have become detached by the breaking of their. threads can pass- The cocoons are held close against the wall 0 by the current and by the tension of the threads which are being drawn through the guide eye P. Cocoons which are'nearly exhausted and which hence'lose in size and weightare driven through the openings in the wall 0 by the cur ent and drawn by the unwinding thread and passed through the channel Q where they are seized and expulled.

Having thus described my invention, I claim:

1. rlpparatus for culling nearly exhausted cocoons from fresh cocoons comprising a vessel arranged for the passage of a current of water therethrough, means to obstruct the passage of cocoons with said current and to form a channel at one side of said obstructing means, and means to draw the threads from the cocoons to 11156 fresh co coons to lie against the upstream side of the obstructing element until they are nearly exhausted and to cause nearly exhausted cocoons to pass thereover, the current formed at one side of said obstructing element serving for the passage of cocoons which become detached by the breaking of their threads.

2. Apparatus for culling nearly exhausted cocoons from fresh cocoons comprising a vessel arranged. for the passage of a current of water therethrough, means to obstruct the passage of cocoons with said current and to form a channel at one side of itself, and means to draw the threads from the cocoons to cause fresh cocoons to lie againstthe upstream. side of the obstructing element until they are nearly exhausted and to cause nearly exhausted cocoons to pass there-over, the current formed at one side of said obstructing element serving for the passage of cocoons which become detached by the breaking of their threads, said ohstructing element-i comprising a revoluhle drum.

In testimony whereof I afli-x my signature.

VITTORIO FIORUZZI. 

